miller



CHARLES R. MILLER, 01? COLLINSVILLE, TEXAS.

- i y GREASE-DISPENSING PUMP.

Specification of Letters Patent. Patented June 3, 1919.

Application filed February 28, 1919. Serial No. 279,668.'

To all whom it may concern:

Be it known that 1, CHARLES R. MILLER, a citizen of the United States of America, residing at Collinsville, in the county of Grayson and State of Texas, have invented certain new and useful Improvements in Grease-Dispensing Pumps, of which the following is' a specification.

My invention relates to devices for dispensing and applying grease or oils to vari-v ous kinds and parts of machinery, and the object is to provide a simple device by which heavy grease as well as more mobile grease may be dispensed to the required parts of machinery and also to remove the old grease from the grease cavities of machinery and which device will provide its own vacuum for taking in grease of different kinds. Another object is to provide a simple device which will be highly eflicient and simple in operation and which may be quickly converted from a grease dispensing device to a grease removing device and vice versa. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application.

Figure 1 is a side elevation of a tank provided with the improved grease dispensing pump, showing a bail for carrying the tank. Fig. 2 is a plan View of the same, showing the device provided with. a flexible nozzle. Fig. 3 is a vertical section of the pump, showing the interior operating devices. Fig. 4 is a side elevation of the lower part of the pump barrel; Fig. 5 is a horizontal section of the pump barrel.

Similar characters of reference are used to indicate the same parts throughout the several views.

Any suitable tank or bucket 1 may be used and a portion of the top 2 must be stationary to support the pumpbarrel. A hollow valve 3 is mounted in the pump barrel 4 which is provided with a grease intake port 5 and a: discharge port 6. The outlet opening 6 is provided with a connection 7 for a flexible nozzle 8. When not in use, the nozzle 8 may be supported on the tank as shown in Fig. 2. A plunger 9 is provided anda plunger rod 10 is connected to the plunger 9 and provided with a handle 11.

Means are provided for opening the inlet 5 and closing the outlet 6 and vice versa with. the valve 3. A rod 12 is attached to the valve 3 and extended along the pump barrel slightly above the top thereof. Guides 13 may beprovided on the sides of the barrel 4 for therod 12; A combined plunger rod guide and valveactuating device 14 is mounted in the upper end of the barrel 4 through which the plunger rod 10 may move freely. This guide 14 moves freely in the barrel 4 but closes the upper end of the barrel and extends far enough down in the barrel to make the device a safe guide. This guide h'as a flange 15 to prevent the device from going too far down in the barrel. The rod '12 has the upper end thereof bent to form an arm 16 to rest on top of the guide 14. The rod 10 is provided with a gage collar 17 which may be set at different positions on the rod to lift or close the valve 5 sooner or later for the purpose of regulating the amount of greaseto be discharged or dispensed. The collar 17 may be held in place by a set screw 18. The collar 17 regulates the depth to which the plunger extends down in the barrel.

Various changes in the sizes, construction, proportion and arrangements of the several parts may bemade without departing from my invention.

In operation, when the plunger is forced down, the collar 17 will force the guide 14 and the rod 12 down and this operation will open the intake port 5. When the plunger is raised, grease or oil will be taken in through the port 5 until the plunger strikes the guide 14. The guide will then be forced upwardly and so movethe rod 12 and thus lift the valve 3 which operation opens the discharge port 6 and closes the intake port 5. When the plunger again is forced down, it will force the grease or 'oil out the discharge port 6 to the place of service, the grease or oil moving freely through the valve 5, and the grease or oil will be forced out until the collar 17 comes down and strikes the rod 12 or arm 16 and so opens the intake port, the rod 12 forcing the valve 3 downwardly and simultaneously closing the discharge port 6.

Should the operator find that no more grease or oil is necessary, and there still remains grease or oil up in the barrel, the operator can push the rod 12 and guide 14 down with his finger and thus close the discharge and open the intake so that when the plunger moves downwardly independently of the rod 16 and valve 3, the grease or oil will simply be forced back into the tank. It will beseen that there will be no pumping of the grease or oil until the plunger has made its full stroke upwardly and so has filled the barrel or the measured space in the barrel with grease or oil because the intake port will remain open and the discharge closed. The pump is thus a positive pump and will discharge the exact amount of grease or oil which has been predetermined by the setting of the collar 17.

For reversing the pump for the purpose of cleaning'old grease or oil out of the grease cups of machinery, change the operation of the valve. While the plunger is down, lift the rod 16 and so open the discharge port 6 and simultaneously close the intake port. When the plunger is raised, grease or oil willbe drawn from the grease cups of the machinery but nov grease can come through the intake port. The nozzle can then be removed from the grease cup of the machine and directed to the ground or other place and the grease discharged by forcing the plunger downwardly.

What I claim, is,,

1. A grease pump comprising a barrel in communication with a supply source of grease, provided with an intake port and an exhaust port in the lower part thereof, a sliding hollow valve adapted to open one of said ports and simultaneously close the other port and vice versa, a plunger and plunger rod therefor, and means operatively connected with said plunger rod and with said valve for actuating said, valve.

A grease dispenser comprising a pump barrel in communication with a, supply source of grease and provided with an intake port and an exhaust port in the lower part thereof, a sliding hollow valve adapted to. open one of said ports and close the other simultaneously and vice ,versa, a plungerand a plunger rod therefor, means (iopies oftliis patent maybe obtained for five cents ea cl gby addressing the Commissioner of Patents, i

Washington, I); G. I

operatively connected withsaid plunger rod and with said valve for actuating said valve, and means for gaging the stroke of said plunger for predetermining the quantity of grease to be dispensed.

' 3. A grease dispenser comprising a pump adapted to open one of said ports and simultaneou sly close the other port and vice versa, a plunger and a plunger rod therefor, a collar on sald rod, a sleeve gu de movable in said barreland through which said rodmoves, and an actuating rod connected to said valve and operatively connected with said sleeve guide and said collar for actuating said "alve, I

i l. A grease dispenser comprising a barrel having an intake port in communication with a supply source of grease and a discharge port, a flexible nozzle for'said discharge port for dispensing and removing grease, a sliding hollow valve adapted to open one of said ports and simultaneously close the other 1: ort,,asleeve guide movable in the upper end of said barrel and through which said rod moves freely,-and means 0peratively connected with said sleeve guide and said valve for actuating said valve.

5. A grease dispenser comprising a barrel having an intake port inv communication with a supply source ofgrease and a: discharge port, a flexible nozzle for said discharge port, a sliding hollow valve adapted to move in said barrel, a collar and means for setting said collar at difl'erent positions on said rod, a sliding hollow guide and actuating device movable in the upper end of said barrel, and a rod, connected to said' valve and having a bent arm adapted to be engaged by said collar and said guide for 

